Modified rigid cross-linked polyvinyl chloride foam and preparation method thereof

A technology of cross-linked polyvinyl chloride and polyvinyl chloride paste, which is applied in the field of polymer foam materials, can solve problems such as the thermal processing temperature of rigid cross-linked polyvinyl chloride foam, and achieve improved dimensional stability and thermal deformation temperature , solve the effect of low processing temperature

Active Publication Date: 2014-01-15
威海维赛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are very few literatures that study the effects of different fillers on the performance of rigid cross-linked polyvinyl chloride foam, especially the thermal processing temperature it withstands, and it has not been found that the selection of different fillers can improve the performance of rigid cross-linked polyvinyl chloride foam. Thermal processing temperature of polyvinyl chloride foam and technology to improve its thermal processing performance

Method used

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  • Modified rigid cross-linked polyvinyl chloride foam and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The formula components are composed of the following weight ratios: 90 parts of polyvinyl chloride paste resin with a K value of 70, 10 parts of chlorinated polyvinyl chloride resin with a chlorine content of 64%, 3 parts of triallyl isocyanurate, 30 parts of diphenylmethane diisocyanate modified by carbodiimide-urea ketimine, 9 parts of cis-cyclohexane-1,2-dicarboxylic anhydride, mixture of azodicarbonamide and azobisisobutyronitrile 4 parts, and the weight ratio of azodicarbonamide to azobisisobutyronitrile is 1:1, 2 parts of epoxy soybean oil, and 2 parts of hollow glass microspheres.

[0026] According to the formula ingredients, under the vacuum degree of 0.09MPa, mix the liquid raw materials in the components according to the stated weight, and then add the solid raw materials in the described components into the liquid according to the stated weight, and stir Get a uniform paste mixture in 20 minutes; fill the prepared paste into a 25mm thick steel mold, put the ...

Embodiment 2

[0028] The formula components are composed according to the following weight ratios: 99 parts of polyvinyl chloride paste resin with a K value of 80, 1 part of chlorinated polyvinyl chloride resin with a chlorine content of 68%, and 15 parts of trimethylolpropane trimethacrylate , 70 parts of polymethylene polyphenyl polyisocyanate (commercially available as a mixture), 24 parts of methyl hexahydrophthalic anhydride, 8 parts of a mixture of azodicarbonamide and azobisisobutyronitrile, and azobis The weight ratio of formamide to azobisisobutyronitrile is 1:5, epoxidized soybean oil is 15 parts, and titanium dioxide is 6 parts.

[0029] According to the formula ingredients, under the vacuum degree of 0.09MPa, mix the liquid raw materials in the components according to the stated weight, and then add the solid raw materials in the described components into the liquid according to the stated weight, and stir Get a uniform paste mixture in 20 minutes; fill the prepared paste into a...

Embodiment 3

[0031] The formula components are composed according to the following weight ratios: 95 parts of polyvinyl chloride paste resin with a K value of 75, 5 parts of chlorinated polyvinyl chloride resin with a chlorine content of 70%, and 8 parts of trimethylolpropane trimethacrylate , 25 parts of diphenylmethane diisocyanate modified by carbodiimide-urea ketimine and 25 parts of polymethylene polyphenyl polyisocyanate, 10 parts of methyl hexahydrophthalic anhydride, azodicarbonamide and azodiisocyanate 6 parts of a mixture of butyronitrile, and the weight ratio of azodicarbonamide to azobisisobutyronitrile is 1:3, 10 parts of epoxy soybean oil, 3 parts of titanium dioxide, and 5 parts of carbon nanotubes.

[0032] According to the formula ingredients, under the vacuum degree of 0.09MPa, mix the liquid raw materials in the components according to the stated weight, and then add the solid raw materials in the described components into the liquid according to the stated weight, and st...

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Abstract

The invention discloses a modified rigid cross-linked polyvinyl chloride foam, which is prepared from the following raw materials in parts by weight: 90-99 parts of polyvinyl chloride paste resin, 1-10 parts of chlorinated polyvinyl chloride resin, 3-15 parts of cross-linking agent, 30-70 parts of isocyanate, 9-24 parts of anhydride, 4-8 parts of azo foaming agent, 2-15 parts of epoxidized soybean oil, and 2-6 parts of filler, wherein the filler is any one or combination of more of hollow glass beads, titanium dioxide, a carbon nano tube or montmorillonoid. Meanwhile, a preparation method of the foam is also provided. The form has better dimensional stability and higher distortion temperature; the highest distortion temperature can be up to 120 DEG C.

Description

technical field [0001] The invention relates to the field of polymer foam materials, in particular to a modified rigid cross-linked polyvinyl chloride foam and a preparation method thereof. Background technique [0002] Rigid cross-linked polyvinyl chloride foam has the typical characteristics of structural core materials such as light weight, high strength, and high modulus. Compared with other high-performance foams such as polymethacrylimide foam and polyetherimide foam, it has a With the advantages of low cost, high water resistance and good flame retardant effect, it has more and more applications in the fields of ships, wind energy, transportation, sports equipment, aerospace and other fields. [0003] Regarding the raw material formula and preparation method of rigid cross-linked polyvinyl chloride foam, many patents have been published, such as US2007 / 0200266A1 and US2010 / 0068487, Chinese patent CN101580573A, etc. However, the rigid cross-linked polyvinyl chloride f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L27/24C08K13/04C08K13/02C08K5/1515C08K7/28C08K3/22C08K7/00C08K3/04C08K3/34C08J9/10
Inventor 苑初明
Owner 威海维赛新材料科技有限公司
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